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Semi-quantitative dopamine transporter standardized uptake value in comparison with conventional specific binding ratio in 123I FP-CIT single-photon emission computed tomography (DaTscan)
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Semi-quantitative dopamine transporter standardized uptake value in comparison with conventional specific binding ratio in 123I FP-CIT single-photon emission computed tomography (DaTscan)
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Semi-quantitative dopamine transporter standardized uptake value in comparison with conventional specific binding ratio in 123I FP-CIT single-photon emission computed tomography (DaTscan)
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Journal Article
Semi-quantitative dopamine transporter standardized uptake value in comparison with conventional specific binding ratio in 123I FP-CIT single-photon emission computed tomography (DaTscan)
2018
Overview
PurposeWe developed a new analytical method to quantify the dopamine transporter (DAT) radiation dose in the striatum on [123I] FP-CIT single-photon emission computed tomography (SPECT). This method is based on the dopamine transporter standardized uptake value (DaTSUV). The purpose of this study was to compare DaTSUV with the classical specific binding ratio (SBR) in the discrimination of dopaminergic neurodegenerative diseases (dNDD) from non-dNDD.MethodSeventy-seven consecutive patients who underwent DaTscan were included. Patients were divided into a dNDD group (n = 44; 24 men, 20 women; median age 73 years) and a non-dNDD group (n = 33; 14 men, 19 women; median age 75 years) based on their clinical diagnoses. The relationship between each method was evaluated by Pearson’s correlation coefficient. Differences in SBR and DaTSUV in each group were evaluated by t test. Pairwise comparison of receiver operating characteristic (ROC) curve analysis was performed to compare the discriminating abilities of each method according to the standard error of the area under the curve (AUC). A value of p < 0.05 was considered statistically significant.ResultThere was a significant strong correlation between DaTSUV and SBR (r = 0.910 [95% CI = 0.862–0.942], p < 0.001). The dNDD group showed significantly lower SBR (3.48 [1.25–7.91] vs 6.58 [3.81–11.1], p < 0.001) and DaTSUV (4.91 [1.59–13.6] vs 8.61 [2.29–15.6], p < 0.001) than the non-dNDD group. The discriminating ability of SBR (AUC = 0.918) was significantly higher than that of DaTSUV (AUC = 0.838, p = 0.0176).ConclusionDaTSUV has a good correlation with SBR, but it could not exceed SBR for discriminating dNDD from non-dNDD.
Publisher
Springer Nature B.V
